Fuse.



H. J. WHITE.

FUSE.

APPLICATION FILED NOV- 9, 1915.

Patented Feb. 22, 1916.

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WITNESSES:

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HERBERT J. WHITE, 0F PHILADELPHIA, PENNSYLVANIA, ASSIG-NOR TO FRANK S. HODSON, OF PHILADELPHIA, PENNSYLVANIA.

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Application filed November 9, 1915.

To all whom it may concern:

Be it known that I, HERBERT J. WHITE, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Fuses, of which the following is a specification.

My invention relates to improvements in fuses, and more particularly to a time fuse for shrapnel-shells, the object of the invention being to so construct the fuse as to permit the employment of a time fuse in which certain or all of the parts thereof are composed of metal of lower tensile strength than the metal of the shell. Here- -toforc time fuses for shrapnel-shells have been composed of metal of as high or higher tensile strength than the metal of the shell, which necessitates a great amount of lathe work, which not only adds to the cost of manufacture, but also renders practically impossible an absolutely uniform output. Metal of a lower tensile strength which can be die cast has not been used heretofore because such a metal if exposed to the explosive charge in the shell would blow out before the shell would burst, sothat-the charge in the'shell would 'dischargethrough the end thereof, hence such low tensile metal could not be commercially used. I

It is a well known fact that metal of a low tensile strength which can be die cast would result in a more uniform fuse, and one that could be manufactured at an extremely low price, but for the reasons above stated such a fuse has been heretofore absolutely impracticable.

It is the object of my invention to utilize a fuse in which all or certain of the parts are made of metal of a lower tensile strength than the shell. and so cover the end of the fuse with a metal of higher tensile strength which is secured in the end of the shell and exposed to the explosive mixture in-the shell, that it will compel the shell to burst and not blow out the fuse at the end, and by reason of this novel arrangement of parts I can produce a fuse which can be utilized in connection with any ordinary shrapnel-shell and can place such a fuse on the market at a lower cost and a more uniformly efiicient product.

\Vith these and other objects in view, the invention consists in certain novel features Specification of Letters Patent.

Patented Feb. 22, 1916.

Serial No. 60,482.

of construction and combinations and arrangements of parts as Will be more fully hereinafter described and pointed out in the screw-threaded opening 2 in its end. The

shells as commonly manufactured are thus made, and the opening 2 is of a standard size so that the manufacturers of time fuses can produce such articles, so that they can be inserted in the shells.

3 represents my improved time fuse. The particular details of the several members form no part of this invention, except that they are composed of a metal of low tensile strength which permits the several members to be die cast.

The fuse 3 is provided with a screwthreaded plug 4 appreciably smaller than the opening 2 in the shell, and on this p1ug'4, I

secure a shield plug 5. This shield plug 5- is provided in its end with a screw-threaded socket 6 to receive plug 4, and while I may of course secure the plugs 4 and 5 together in any approved. manner, I have illustrated screws 7 for the purpose. These screws 7 are projected through openings 8 in the shield plug 5, and are screwed into tapped recesses 9 1n the end of plug 4.

The shield plug 5 is externally screwthreaded as shown at 10 to engage the threaded opening 2, and I would have it understood that this shield plug 6 constitutes a part of the fuse, and the fuse is to be placed on the market with the shield plug thereon, and the manufacturer of the shells can screw the shield plug into the end of the shell as shown. This shield plug 5 is of a metal the tensile strength of which is equal to or greater than the tensile strength of the shell 1, and of appreciably greater strength than that of the fuse. The shield plug 5 will prevent any possibility of the explosion blowing through the end of the shell, and will compel the shellto burst. The shield plug 5 is provided \Vltha central bore 11, which communicates with the end of the fuse plug 4, so that the firing I claim as new and desire to secure by Letters Patent is:

1. A fuse composed of metal of relatively low tensile strength, having a relatively small plug at one end, a metal shield plug of relatively high tensile strength inclosing the first-mentioned plug and externally screw-threaded, and said shield plu adapted to screw into the threaded end 0 a shell, substantially as described.

2. A fuse of the character described, composed of metal, of relatively low tensile strength, and havingarelatively small screwthreaded plug at one end, a shield plug having a screw threaded socket in one end to receive the first-mentioned plug, screws projected through the shield and screwed into the first-mentioned plug securing the plugs together, said shield plug externally screwthreaded and adapted to screw into the threaded end of the shell, said shield plug of a metal of higher tensile strength than the main portions of the fuse, and of a tensile strength at least equal to the tensile strength of the shell to which it is connected, substantially as described.

' 3. The combination with a metal shell having a screw-threaded opening in its end, a metal fuse of lower tensile strength than the metal of the shell, and a shield plug fixed to the fuse forming a part of the fuse,

.said shield plug externally screw-threaded and fitting within the screw-threaded opening in the end of the shell, said shield of a higher tensile strength than the main por tions of the fuse and of a tensile strength at,

plug adapted to engage the screw-threads of the shell and havinga thread length and a thickness of metal between the fuse and the interior of the shell of a strength at least equal to the strength of the shell, whereby the explosion within the shell is compelled to burst the shell substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses,

HERBERT J. WHITE.

Witnesses:

C. R. ZIEGLER, S. W. FOSTER. 

